Burly Brand Slammer Shock For Harley Softail Crafted with a high-pressure nitrogen charged damper, the Slammer Shock utilizes a hard chrome precision ground piston rod and features a steel monotube construction with an Internal Floating Piston (Ifp) to provide incredible ride performance, even when you're cruising at high speeds. It is designed to fit seamlessly into your Harley-Davidson M8, ensuring a hassle-free installation process giving you that slammed, lowered look in no time. The new Slammer is engineered to give you a smooth, stable ride at high speeds, without compromising on comfort or style Features: 12.2 Shock Length High Pressure Nitrogen Charged Damper Internal Floating Piston (Ifp) Deflective Disc Valving Preload adjustment via threaded preload adjuster with preload spanner wrench (included)